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If you take 40 percent of a number and get 170, then what is that number? In other words, you know that 40 percent of a number is 170 and you want to know what that initial number is.

To solve this problem you multiply 170 by 100 and then divide the total by 40 as follows: (170 x 100) / 40

When we put that into our calculator, we get the following answer:

425


Therefore, the answer to "170 is 40 percent of what number?" is 425, and you can also derive that 40 percent of 425 equals 170.

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